Set of (4) Polaris Lock & Ride Type Knob Anchor Kit for Sportsman, RZR, ACE & ATV's SHM USA ATV PRODUCTS: Mount anything on your Polaris Sportsman, RZR and other ATV's with a 1 inch hole. Expanding anchors fit tight and allow you to add and remove accessories as you wish without attaching them permanently. Lock and ride knob type expansion anchors and fasteners. Keep your gear secure. Simply turn the fastener until tight and you're done! Great for, electronics brackets, gun cases, bow cases, storage bins, tool boxes, chainsaw cases and more. Each set includes: (4) 5/16" x 2" Knob Fasteners with 1-3/4"" diameter knob. Please check your ATV to make sure these 1" diameter fasteners will work for your application before ordering. This product does NOT fit Polaris Ranger or Polaris General. Check out our other listings for additional kit options!